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Fifth Circuit rejects “passive investor” test for limited partners

Sirius Solutions, L.L.L.P vs. Commissioner. United States Court of Appeals for the Fifth Circuit. No. 24-60240.

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Tax Coda
Jan 20, 2026
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The Fifth Circuit held that “limited partner” in § 1402(a)(13) means a partner with limited liability in a state-law limited partnership, not only a passive investor, and it vacated the Tax Court’s decision.

Holding

The Court ruled that § 1402(a)(13) excludes a limited partner’s distributive share from self-employment tax based on limited liability status in a limited partnership. It rejected the Tax Court’s “passive investor” functional test and remanded for further proceedings.

Why It Matters

  • This creates a direct circuit-level split in approach with the Tax Court’s Soroban line, which treats “limited partner” as limited to passive investors.

  • It strengthens the position that state-law limited partnership status and limited liability can control the § 1402(a)(13) exclusion, at least in the Fifth Circuit.

  • It increases uncertainty for partnerships with active owners holding limited partnership interests because the Tax Court still applies a functional analysis.

  • It pushes the fight back to sta…

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